Number System Which choice provides the answer in the following : If 2 * 3 = 36, 5 * 4 = 400, 6 * 2 = 144, 3 * 3 = 81; then, 5 * 5 = ? 325 425 625 525 325 425 625 525 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 625
Number System In a two-digit number, the digit in unit's place is two more than three times the digit in ten's place. If the sum of the two digits is 10, what is the number ? 28 24 22 18 28 24 22 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ y = 3x + 2 .......(i)And, x + y = 10 ......(ii)From (i) and (ii), x = 2, y = 8∴ Number = 28
Number System How many numbers up to 100 are divisible by 7? 14 107 100 93 14 107 100 93 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System If the sum of five consecutive even numbers A, B, C, D and E is 130, what is the product of A and E ? 840 720 780 660 840 720 780 660 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive even numbers be A = 2x, B = 2x + 2, C = 2x + 4, D = 2x + 6 and E = 2x + 8= A + B + C + D + E = 130= 10x + 20 = 130∴ x = 130 - 20/10 = 11Therefore, product of A and E= 22 x 30 = 660
Number System Find out the smallest possible number which will be divisible by 1122 as well as 153. 3366 4366 1366 2366 3366 4366 1366 2366 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3366
Number System A shopkeeper purchased 200 bulbs for Rs. 10 each. However, 5 bulbs were fused and had to be thrown away. The remaining were sold at Rs. 12 each. What will be percentage profit? 17 33 14 21 17 33 14 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 12
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