Number System (2560 x 1.4) +(7400 x 0.6) =? 7234 6543 8024 9160 7234 6543 8024 9160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8024
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 ? 840 780 720 660 840 780 720 660 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 If one-seventh of a number is 55 then 40% of that number = ? 154 171 163 147 154 171 163 147 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x , Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154
Number System 5358 * 51 = ? 273268 273348 273258 273358 273268 273348 273258 273358 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 12/5 5/12 25/144 144/25 12/5 5/12 25/144 144/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
Number System If the following fractions 7/6, 6/7, 5/3, 8/13 and 6/5 are arranged in descending order, which will be the last in the series? 9/13 8/13 7/13 6/13 9/13 8/13 7/13 6/13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7/6 = 1.166, 6/7 = 0.857,5/3 = 1.66,8/13 = 0.615,6/5 = 1.2Therefore, 5/3 > 6/5 > 7/6 > 6/7 > 8/13
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