Number System Complete the series : 11, 12, 17, 18, 23, 24 ... 12 30 None of these 14 12 30 None of these 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP None of these
Number System 4500 * ? = 3375 2/5 1/4 3/5 3/4 2/5 1/4 3/5 3/4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4500 * x = 3375= x = 3375/4500 = 3/4
Number System What least number shall be added to 4700 to make it a perfect square ? 91 81 71 61 91 81 71 61 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 The average of five consecutive even numbers A, B, C, D and E is 42. What is the product of B and D ? 4589 2476 1760 3289 4589 2476 1760 3289 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A + B + C + D + E/5 = 42∴ C = 42, ∴ B = 40, ∴ D = 44∴ B x D = 40 x 44 = 1760
Number System If a + b = 16 and ab = 68, what is the value of a² + b² ? 116 120 112 124 116 120 112 124 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 Simplify the 121 * 175 + 363 * 275 363000 316600 None of these 328100 363000 316600 None of these 328100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 121 * 175 + 363 * 275 => 121 * 175 + 121 * 3 * 275121 * 175 + 121 * 825= 121 * (175 + 825) = 121000
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