Number System What least number shall be added to 4700 to make it a perfect square ? 61 91 81 71 61 91 81 71 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (69)² = 4761 and (68)² = 4624Clerly 4624 < 4700 < 4761So 61 should be added to make 4700 a perfect square.
Number System Find the greatest number which leaves the same remainder when it divides 25, 57 and 105. 18 12 8 16 18 12 8 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.
Number System ?125÷5x ?=6265 124 1253 153 1452 124 1253 153 1452 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System What is the sum of all the composite numbers up to 20? 130 131 128 132 130 131 128 132 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
Number System If the difference between a number and its three-fourth is 18, find the number. 68 57 61 72 68 57 61 72 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72
Number System If 70% of an equal to 40% of b, then ratio between a and b is? None 4: 7 7: 4 7: 11 None 4: 7 7: 4 7: 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 70 a = 40 ba: b = 4: 7
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