Number System 68375 + 72848 - ? = 34346 + 49569 58308 59308 None of these 57308 58308 59308 None of these 57308 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 68375 + 72848 - 34346 - 49569 = 141223 - 83915 = 57308
Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 396 378 343 382 396 378 343 382 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
Number System The peresent age of the father and the son are in the ratio of 8:3. After 12 years the ratio of their ages will be 2:1. What is the sum of the present age of the father and the son ? 68 years 66 years 69 years 67 years 68 years 66 years 69 years 67 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the present age of the father be 'x' and that of the son be 'y'. Then x/y = 8/3∴ 3x = 8y Further, x + 12/y + 12 = 2/1 ∴ x + 12 = 2y + 24 ∴ x - 2y = 12 ......(ii)From eqn (i) and (ii), x = 48, y = 18 ∴ sum = 66 yrs.
Number System In a division sum, the quotient is 120, the divisor 456 and the remainder 333, find the dividend? 5553 50553 56053 55053 5553 50553 56053 55053 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 120 * 456 + 333 = 55053
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 ? 3289 2476 4589 1760 3289 2476 4589 1760 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 The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ? 75 73 76 74 75 73 76 74 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4= 190= 5x + 10 = 190= 5x = 190 - 10 = 180= x = 180/5 = 36The largest number = 36 + 4 = 40∴ Required sum = 36 + 40 = 76
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