Number System A certain number successively divided by 2, 5 and 7 leaves remainders 1, 2 and 3 respectively. When the same number is divided by 70, what is the remainder? 33 36 34 35 33 36 34 35 ANSWER DOWNLOAD EXAMIANS APP
Number System What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ? 78 76 77 75 78 76 77 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2 x 2 + 1 = 5;5 x 2 - 1 = 99 x 2 + 1 = 19: 19 x 2 - 1 = 3737 x 2 + 1 = 75
Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 378 343 382 396 378 343 382 396 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
Number System If 4 2/3 is subtracted form 10 1/2 and the difference is multiplied by 450, then what is the final answer? None of these 2675 2725 2875 None of these 2675 2725 2875 ANSWER DOWNLOAD EXAMIANS APP
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 625 712 920 824 625 712 920 824 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
Number System A, B, C, D and E are consecutive even numbers respectively. The average of 5 numbers is 82. What is the product of C and E ? 6383 6373 6363 6353 6383 6373 6363 6353 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4 = 5 x 82= 5x + 10 = 410 = 5x = 400= x = 400/5 = 80 ∴ A = 80C = 82and E = 84= C x E = 82 x 84 = 6383
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