Number System If the product of two successive positive integers is 4692, what is the smaller number ? 64 68 66 70 64 68 66 70 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 68 x 69 = 4692
Number System In how many different ways can the letters of word 'BIOLOGY' be arranged ? 2367 2678 2410 2520 2367 2678 2410 2520 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In BIOLOGY total 7 letters are there but O comes twice.∴ Number of arrangements = 7!/2! = 2520
Number System 4.78% of 1255 + 3.24% of 440=0.5% of ? 13849 14849 12849 11849 13849 14849 12849 11849 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.5 x ?/100 = 4.78 x 1255/100 + 3.24 x 440/100= 59.989 + 14.256∴ ? = 74.245 x 100/0.5 = 14849
Number System If one-third of one fourth of a number is 15, then three-tenth of that number is: 45 25 35 54 45 25 35 54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,1/3 of 1/4 of x = 15x = 15 * 12 = 180So, required number = (3/10 * 180) = 54.
Number System How many of the following numbers are divisible by 132? 264, 396, 462, 792, 968, 2178, 5184, 6336 5 7 6 4 5 7 6 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 132 = 11 * 3 * 4Clearly, 968 is not divisible by 3None of 462 and 2178 is divisible by 4And, 5284 is not divisible by 11Each one of the remaining four numbers is divisible by each one of 4, 3 and 11.So, there are 4 such numbers.
Number System What number should replace both the question marks (?) in the following question ? 83 82 85 84 83 82 85 84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
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