Number System The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 5/4 4/5 3/5 3/10 5/4 4/5 3/5 3/10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/x - x = 9/20 20x2 + 9x - 20 = 0 20x2 + 25x - 16x - 20 = 0 5x(4x + 5) -4(4x + 5) = 0(4x + 5)(5x - 4) = 0x = 4/5
Number System What least number should be added to 8602 to make it a perfect square ? 51 41 36 47 51 41 36 47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47
Number System 3251 + 587 + 369 - ? = 3007 1375 1300 1250 1200 1375 1300 1250 1200 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4207 - x = 3007 Then, x = 4207 - 3007 = 1200
Number System If A = 1, B = 3, C = 5 and so on, what do the numbers 3, 9, 7 stand for CAR CAT BAT BED CAR CAT BAT BED ANSWER EXPLANATION DOWNLOAD EXAMIANS APP BED
Number System ?125÷5x ?=6265 1452 1253 124 153 1452 1253 124 153 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System A number when divided by 221 gives a remainder 43, what remainder will be obtained by dividing the same number 17? 9 5 10 11 9 5 10 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 221 + 43 = 264/17 = 9 (Remainder)
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