Number System What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ? 77 76 78 75 77 76 78 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 The sum of the present age of a father and a son is 60 years. Five years before, the age of the father was four times that of son. What is the present age of the son ? 25 years 18 years 15 years 21 years 25 years 18 years 15 years 21 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the father's age be x and son's age yTherefore, x + y = 60 ....................(i)Five years back, (x - 5) = 4 (y - 5)x - 4y = - 15 ......................(2)Solving (1) and (2), x = 45 and y = 15
Number System (444 x 44 x 4) ÷ 40 ? 1953.6 2153.6 1853.6 2053.6 1953.6 2153.6 1853.6 2053.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 444 x 44 x 4/40 = 1953.6
Number System Which choice provides the answer : If 2 + 3 = 10, 6 + 5 = 66, 7 + 2 = 63, 9 + 7 = 144 then, 8 + 4 = ? 114 102 96 88 114 102 96 88 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 96
Number System 4/6 of 6/5 of 5/7 of a number is 96. Find the number. 164 162 170 168 164 162 170 168 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 4/6 x 6/5 x 5/7 = 96∴ x = 96 x 6 x 5 x 7/4 x 6 x 5 = 168
Number System 124, 235, 447, 760, 1174, ? 1589 1489 1389 1689 1589 1489 1389 1689 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP +111, +212, +313, +414
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