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 ? 2476 4589 1760 3289 2476 4589 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 Subtracting 30 from a number, the remainder is one fourth of the number. Find the number? 45 40 30 22 1/2 45 40 30 22 1/2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/4 x = 30 => x = 40
Number System The product of two consecutive odd numbers is 4623. What is the product of the next two consecutive odd numbers ? 5183 8795 7745 6782 5183 8795 7745 6782 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √4623 = 6767 x 69 = 4623∴ Required product = 71 x 73 = 5183
Number System If A = 1, B = 3, C = 5 and so on, what do the numbers 3, 9, 7 stand for CAR BAT BED CAT CAR BAT BED CAT ANSWER EXPLANATION DOWNLOAD EXAMIANS APP BED
Number System A number consists of two digits. If 3/5 of 1/5 of the number is 9. Find the sum of its two digits? 7 12 60 8 7 12 60 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/5 * 1/5 = 9x = 75 => 7 + 5 = 12
Number System The difference between a two-digit number and the number obtained by interchanging its two digits is 45. The sum of the digit of the number is 9. What is the product of the two digits of the number? 12 14 13 15 12 14 13 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.Therefore, x + y = 9 ..................(i)10x + y - (10y + x) = 4510x + y - 10y - x = 45Therefore, x - y = 5 ..................(ii)From (i) and (ii), x = 7, y = 2Number = 72Therefore, = x x y = 7 x 2 = 14
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