# Placement Written test paper for MNC || Math questions and answers Part –2

 Ques 51 : Choose the correct answer. If antilog x 5 = 30, what can you infer about x? Option 1 : x is a number between 1 and 2 Option 2 : x is 305 Option 3 : x is a number between 2 and 3 Option 4 : None of these Ques 52 : Choose the correct answer. Every time x is increased by a given constant number, y doubles and z becomes three times. How will log(y) and log(z) behave as x is increased by the same constant number? Option 1 : Both will grow linearly with different slopes Option 2 : Both will grow linearly with same slopes Option 3 : y will grow linearly, while z will not Option 4 : z will grow linearly, while y will not Ques 53 : Choose the correct answer. x triples every second. How will log2x change every second? Option 1 : It will double every second Option 2 : It will triple every second Option 3 : It increases by a constant amount every second. Option 4 : None of these Ques 54 : Choose the correct answer. f(x) grows exponentially with x, how will f(log(x)) grow? Option 1 : Exponentially Option 2 : Linearly Option 3 : Quadratically Option 4 : None of these Ques 55 : Choose the correct answer. What is the value of log512 8? Option 1 : 3 Option 2 : 1/3 Option 3 : -3 Option 4 : -1/3 Ques 56 : Choose the correct answer. What is the value of log7 (1/49)? Option 1 : 2 Option 2 : 1/2 Option 3 : -1/2 Option 4 : -2 Ques 57 : Choose the correct answer. Given that log64 x = 2/6, what is the value of x? Option 1 : 2 Option 2 : 4 Option 3 : 6 Option 4 : 8 Ques 58 : Choose the correct answer. If 7x = 85, what is the value of x? Option 1 : log785 Option 2 : log857 Option 3 : log107 Option 4 : log1085 Ques 59 : Choose the correct answer. If log102 = 0.3010, what is the number of digits in 264 Option 1 : 19 Option 2 : 20 Option 3 : 18 Option 4 : None of these Ques 60 : Choose the correct answer. What is log110? Option 1 : 1 Option 2 : 10 Option 3 : 0 Option 4 : Tends to infinity Ques 61 : Choose the correct answer. What is log100 ? Option 1 : 0 Option 2 : 10 Option 3 : 1 Option 4 : Not defined Ques 62 : Choose the correct answer. What is the value of log3 (-9)? Option 1 : 3 Option 2 : 1/3 Option 3 : -3 Option 4 : Not defined Ques 63 : Choose the correct answer. Rajeev multiplies a number by 10, the log (to base 10) of this number will change in what way? Option 1 : Increase by 10 Option 2 : Increase by 1 Option 3 : Multiplied by 10 Option 4 : None of these Ques 64 : Choose the correct answer. The logarithm of a very small positive number will tend to which of the following? Option 1 : 0 Option 2 : negative infinity Option 3 : positive infinity Option 4 : 1 Ques 65 : Choose the correct answer. If n numbers are in geometric progression, the logarithm of the number will be in which of the following? Option 1 : Geometric Progression Option 2 : Arithmetic Progression Option 3 : Harmonic Progression Option 4 : None of these Ques 66 : Choose the correct answer. Which of the following is equivalent to log(a + b) ? Option 1 : log a + log b Option 2 : log a * log b Option 3 : log a – log b Option 4 : None of these Ques 67 : Choose the correct answer. What is the value of log3 (1/9) + log 9 81 ? Option 1 : 2 Option 2 : -2 Option 3 : 0 Option 4 : 4 Ques 68 : Choose the correct answer. What is the value of log3 1.5 + log3 6 ? Option 1 : 2 Option 2 : 2.7 Option 3 : 1.8 Option 4 : None of these Ques 69 : Choose the correct answer. Which of the following is log8 x equivalent to? Option 1 : log2 (x/3) Option 2 : log2 (3x) Option 3 : (log2x)/ 3 Option 4 : None of these Ques 70 : Choose the correct answer. If n numbers are in arithmetic progression, the logarithm of the number will be in which of the following? Option 1 : Exponentially Option 2 : Linearly Option 3 : Quadratically Option 4 : None of these Ques 71 : Choose the correct answer. What is the value of log20 1 ? Option 1 : 0 Option 2 : 1 Option 3 : 20 Option 4 : None of these Ques 72 : Choose the correct answer. The unit’s digit in the product (771 x 659 x 365) is Option 1 : 1 Option 2 : 2 Option 3 : 4 Option 4 : 6 Ques 73 : Choose the correct answer. 1.52 * 0.02251/2 = ? Option 1 : 0.0375 Option 2 : 0.3375 Option 3 : 3.275 Option 4 : 32.75 Ques 74 : Choose the correct answer. If x1/2 / 4411/2 = 0.02, the value of x is: Option 1 : 0.1764 Option 2 : 1.764 Option 3 : 1.64 Option 4 : 2.64 Ques 75 : Choose the correct answer. The value of 21/2 upto three places of decimal is Option 1 : 1.41 Option 2 : 1.412 Option 3 : 1.413 Option 4 : 1.414 Ques 76 : Choose the correct answer. The value of (8-25– 8-26) is: Option 1 : 7 x 8-25 Option 2 : 7 x 8-26 Option 3 : 8 x 8-26 Option 4 : None of these Ques 77 : Choose the correct answer. If 22n-1 = (1 / 8n-3) then the value of n is: Option 1 : 3 Option 2 : 2 Option 3 : 0 Option 4 : -2 Ques 78 : Choose the correct answer. If 2x = 3y = 6-z, then (1/x + 1/y + 1/z) is equal to: Option 1 : 0 Option 2 : 1 Option 3 : 3/2 Option 4 : -0.5 Ques 79 : Choose the correct answer. What is the remainder when 1723 is divided by 16? Option 1 : 0 Option 2 : 1 Option 3 : 2 Option 4 : 3 Ques 80 : Choose the correct answer. What will be the remainder when 1336 is divided by 2196? Option 1 : 0 Option 2 : 1 Option 3 : 12 Option 4 : 2195 Ques 81 : Choose the correct answer. The roots of the equation 4x-3*2x+2+32=0 would include- Option 1 : 2, 3 Option 2 : 1, 2, 3 Option 3 : 1, 2 Option 4 : 4, 8 Ques 82 : Choose the correct answer. If ax =b, by=c and cz =a, then the value of xyz is: Option 1 : 0 Option 2 : 1 Option 3 : 2 Option 4 : 3 Ques 83 : Choose the correct answer. If x = 1+21/2 and y=1-21/2, then x2+y2 is – Option 1 : 2 Option 2 : 3 Option 3 : 6 Option 4 : 0 Ques 84 : Choose the correct answer. If 4x+3 = 2x+7, then the value of x is: Option 1 : 3 Option 2 : 2 Option 3 : 1 Option 4 : None of these Ques 85 : Choose the correct answer. 2x+y = 2*(2)1/2 and 2x-y = 21/2,the value of x is: Option 1 : 1 Option 2 : 2 Option 3 : 3 Option 4 : 4 Option 5 : None of these Ques 86 : Choose the correct answer. If x = 8, y = 27, the value of (x4/3+y2/3)1/2 is: Option 1 : 5 Option 2 : 6 Option 3 : 7 Option 4 : 8 Option 5 : None of these Ques 87 : Choose the correct answer. If xy = yx and x = 2y, the value of y is: Option 1 : 1 Option 2 : 2 Option 3 : 3 Option 4 : 4 Option 5 : None of these Ques 88 : Choose the correct answer. If 2x * 3y = 18 and 22x * 3y= 36, the value of x is: Option 1 : 0 Option 2 : 1 Option 3 : 2 Option 4 : 3 Option 5 : None of these Ques 89 : Choose the correct answer. What is the value of 500 ? Option 1 : 0 Option 2 : 1 Option 3 : 50 Option 4 : None of these Ques 90 : Choose the correct answer. What is the value of 6-2 ? Option 1 : 1/36 Option 2 : 36 Option 3 : -36 Option 4 : None of these Ques 91 : Choose the correct answer. What is the value of 0-10 ? Option 1 : 0 Option 2 : 1 Option 3 : -10 Option 4 : None of these Ques 92 : Choose the correct answer. What is the value of 251.5 ? Option 1 : 325 Option 2 : 32.5 Option 3 : 125 Option 4 : None of these Ques 93 : Choose the correct answer. What is the value of (0.027)1/3? Option 1 : 0.3 Option 2 : 0.03 Option 3 : 0.003 Option 4 : None of these Ques 94 : Choose the correct answer. What is the value of (0.016)1/4? Option 1 : 0.2 Option 2 : 0.02 Option 3 : 0.002 Option 4 : None of these Ques 95 : Choose the correct answer. Walking 6/7th of his usual speed, a man is 12 minutes too late. The usual time taken by him to cover that distance is: Option 1 : 1 hour Option 2 : 1 hr 12min Option 3 : 1 hr 15 min Option 4 : 1 hr 20 min Ques 96 : Choose the correct answer. A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively ? Option 1 : 2 : 1 Option 2 : 3 : 2 Option 3 : 8 : 3 Option 4 : Cannot be determined Option 5 : None of these Ques 97 : Choose the correct answer. In a 100 m race, A can beat B by 25 m and B can beat C by 4 m. In the same race, A can beat C by: Option 1 : 21 m Option 2 : 26 m Option 3 : 28 m Option 4 : 29 m Ques 98 : Choose the correct answer. In a family, the father took 1/5 of the cake and he had 4 times as much as others had, then the family members are: Option 1 : 16 Option 2 : 17 Option 3 : 18 Option 4 : None of these Ques 99 : Choose the correct answer. The price of sugar is increased by 25%. In order not to increase the expenditure a lady must reduce her consumption by: Option 1 : 25% Option 2 : 20% Option 3 : 30% Option 4 : None of these Ques 100 : Choose the correct answer. I read 3/8 of a book on one day, and 4/5 of the remainder on another day. If now there were 30 pages unread, the book contains: Option 1 : 240 pages Option 2 : 230 pages Option 3 : 340 pages Option 4 : 140 pages Option 5 : None of these