Number System A certain number when divided by 45 leaves a remainder 31, what is the remainder if the same number be divided by 15? 9 11 13 1 9 11 13 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 45 + 31 = 76/15 = 1 (Remainder)
Number System Find the least number with which 16200 should be multiplied, to make it a perfect cube. 45 36 360 48 45 36 360 48 ANSWER DOWNLOAD EXAMIANS APP
Number System If a + b = 16 and ab = 68, what is the value of a² + b² ? 124 120 116 112 124 120 116 112 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP a + b = 16 Therefore, (a+b)² = (16)² = 256 a² + b² + 2ab = 256Therefore, a² + b² = 256 - 2 x 68Therefore, a² + b² = 256 - 136 = 120
Number System 486+32×25—59=? 582 596 528 567 582 596 528 567 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1192 1200 1092 1082 1192 1200 1092 1082 ANSWER DOWNLOAD EXAMIANS APP
Number System 7.8% of 12.5 + 2.5% of 161 = ? 2 5 12 9 2 5 12 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7.8 x 12.5/100 + 2.5 x 161/100= 0.975 + 4.025= 5
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