Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 160 28 12 180 160 28 12 180 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System 3251 + 587 + 369 - ? = 3007 1300 1250 1200 1375 1300 1250 1200 1375 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4207 - x = 3007 Then, x = 4207 - 3007 = 1200
Number System If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ? 7 8 10 9 7 8 10 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9
Number System Write the next number in the series : 14, 16, 13, 17, 12, 18, 11 .... 15 7 19 1 15 7 19 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 19
Number System A certain number when divided by 39 leaves a remainder 20, what is the remainder when the same number is divided by 13? 5 11 7 0 5 11 7 0 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 39 + 20 = 59/13 = 7 (Remainder)
Number System (444 x 44 x 4) ÷ 40 ? 1853.6 2153.6 1953.6 2053.6 1853.6 2153.6 1953.6 2053.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 444 x 44 x 4/40 = 1953.6
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