A A boat covers a distance of 30 km downstream in 2 hours while it takes 6 hours to cover the same distance upstream. What is the speed of the boat in km/hr ? August 18, 2021 1 Min Read 0 118 August 18, 2021 1 Min Read 0 118 Answer : C. 10 Boats and Streams Editor Continue Reading
A A motorboat whose speed is 15 km/hr in still water goes 30km downstream and comes back in four and a half hours. The speed of the stream is ? August 18, 2021 1 Min Read 0 99 August 18, 2021 1 Min Read 0 99 Answer : D. 5 km/hr Boats and Streams Editor Continue Reading
F Four whole number taken at random are multiplied together. The chance that the last digit of the product is 1, 3, 7, or 9 is ? August 18, 2021 1 Min Read 0 41 August 18, 2021 1 Min Read 0 41 Answer : A. 16/625 Probability Editor Continue Reading
A A brother and sister appear for an interview against two vacant posts in an office. The probability of the brother’s selection is 1/5th and that of the sister’s selections is 1/3rd. What is the probability that one of them is selected ? August 18, 2021 1 Min Read 0 71 August 18, 2021 1 Min Read 0 71 Answer : B. 2/5 Probability Editor Continue Reading
A A bag contains 8 red and 5 white balls. 2 balls are drawn at random. What is the probability that both are white ? August 18, 2021 1 Min Read 0 91 August 18, 2021 1 Min Read 0 91 Answer : D. 5/39 Probability Editor Continue Reading
I If the probability that A will live 15 year is 7/8 and that B will live 15 year is 9/10, then what is the probability that both will live after 15 year ? August 18, 2021 1 Min Read 0 42 August 18, 2021 1 Min Read 0 42 Answer : B. 63/80 Probability Editor Continue Reading
T Three unbiased coins are tossed. What is the probability of getting at most two heads ? August 18, 2021 1 Min Read 0 31 August 18, 2021 1 Min Read 0 31 Answer : D. 7/8… Probability Editor Continue Reading
I If log 125 / log 5 = x, then x is equal to ? August 18, 2021 1 Min Read 0 180 August 18, 2021 1 Min Read 0 180 Answer : B. 3 Logarithm Editor Continue Reading
T The value of log2(1/64) is ? August 18, 2021 1 Min Read 0 56 August 18, 2021 1 Min Read 0 56 Answer : B. -6 Logarithm Editor Continue Reading
l log10(10) + log10(100) + log10(1000) + log10(10000) + log10(100000) is equal to ? August 18, 2021 1 Min Read 0 165 August 18, 2021 1 Min Read 0 165 Answer : A. 15 Logarithm Editor Continue Reading
I If 100.3010 = 2, then find the value of log0.125 (125) ? August 18, 2021 1 Min Read 0 189 August 18, 2021 1 Min Read 0 189 Answer : B. – 699 / 301… Logarithm Editor Continue Reading
F Find the value of log (a2 / bc) + log (b2 / ac) + log (c2 / ab) ? August 18, 2021 1 Min Read 0 490 August 18, 2021 1 Min Read 0 490 Answer : A. 0… Logarithm Editor Continue Reading
T The simplified form of log (75/16) – 2 log (5/9) + log (32/343) is ? August 18, 2021 1 Min Read 0 72 August 18, 2021 1 Min Read 0 72 Answer : A . log 2 Logarithm Editor Continue Reading
T The value of log 9/8 – log 27/32 + log 3/4 is ? August 18, 2021 1 Min Read 0 27 August 18, 2021 1 Min Read 0 27 Answer : A . 0 Logarithm Editor Continue Reading
W What is the value of log(ab2) – log(ac) + log(abc4) – 3log(bc) ? August 18, 2021 1 Min Read 0 121 August 18, 2021 1 Min Read 0 121 Answer : D. 1… Logarithm Editor Continue Reading
l logxY = 100 and log2x = 10, then the value of y is ? August 18, 2021 1 Min Read 0 44 August 18, 2021 1 Min Read 0 44 Answer : B. 21000… Logarithm Editor Continue Reading
A A certain number of answer sheets can be checked in 12 days working 5 hours each day by 9 examiners. For how many hours a day should 4 examiners work to check twice the number of answer sheets in 30 days ? August 17, 2021 1 Min Read 0 31 August 17, 2021 1 Min Read 0 31 Answer : D. 9 hours Chain Rule Editor Continue Reading
I If 4 men reap 40 acres in 30 days, how many acres will 18 men reap in 12 days ? August 17, 2021 1 Min Read 0 118 August 17, 2021 1 Min Read 0 118 Answer : D. 72 Acres Chain Rule Editor Continue Reading
I In a dairy farm, 20 cows eat 20 bags in 20 days. In how many days one cow will eat one bag of husk ? August 17, 2021 1 Min Read 0 109 August 17, 2021 1 Min Read 0 109 Answer : C. 20 days Chain Rule Editor Continue Reading
I If 30 men can build a wall 56 meters long in 5 days, what length of a similar wall can be built by 40 men in 3 days ? August 17, 2021 1 Min Read 0 382 August 17, 2021 1 Min Read 0 382 Answer : B. 44.8 m Chain Rule Editor Continue Reading
