Number System What is the value of ? in the following equations ? 72/? = ?/50 60 100 40 80 60 100 40 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
Number System A number when divided by 221 gives a remainder 43, what remainder will be obtained by dividing the same number 17? 5 11 10 9 5 11 10 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 221 + 43 = 264/17 = 9 (Remainder)
Number System What value should come in place of ? in the given number series ? 15, 51, 162, 498, 1509, ? 7878 3434 4545 5656 7878 3434 4545 5656 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 15, (15 + 2) x 3 = 51,(51 + 3) x 3 = 162, (162 + 4) x 3 = 498, (498 + 5) x 3 = 1509(1509 + 6) x 3 = 4545
Number System Look at this series: 1000, 200, 40, ... What number should come next? 24 8 2 14 24 8 2 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP This is a simple division series. Each number is divided by 5. Rule = (1st number / 5 = 2nd number) (2nd number / 5 = 3rd number)....Now, (1000 / 5 = 200), (200 / 5 = 40), (40 / 5 = 8)...So answer is a = 8.
Number System If (35)² is added to the square of a number the answer so obtained is 1394. What is the number ? 15 11 13 17 15 11 13 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² + (35)² = 1394Therefore, x² = 1394 - (35)² = 1394 - 1225 = 169Therefore, x = √169 = 13
Number System √360 - 225 x 2 + 379 = ? 20 17 18 19 20 17 18 19 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √360 - 225 x 2 + 379 = √360 - 450 + 379 = √289= 17
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