Number System Which choice provides the answer : If 2 + 3 = 10, 6 + 5 = 66, 7 + 2 = 63, 9 + 7 = 144 then, 8 + 4 = ? 102 114 96 88 102 114 96 88 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 96
Number System The difference between two integers is 5. Their product is 500. Find the numbers. 21, 26 20, 25 15, 20 30, 25 21, 26 20, 25 15, 20 30, 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.
Number System If 5/7 of a number is 145, what is 180% of that number ? 365.4 355.4 345.4 375.4 365.4 355.4 345.4 375.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4
Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 22 20 23 21 22 20 23 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System One-eighth of a number is 76. What will be 54% of the number ? 321.32 318.32 332.32 328.32 321.32 318.32 332.32 328.32 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, 1/8 of x = 76Therefore, x = 60854% of 608 = 608 x 54/100 = 328.32
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 67 years 69 years 68 years 66 years 67 years 69 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.
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