Number System 7589 - ? = 3434 4155 4242 11023 1123 4155 4242 11023 1123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 7589 - x = 3434Then x = 7589 - 3434 = 4155
Number System (444 x 44 x 4) ÷ 40 ? 1853.6 1953.6 2153.6 2053.6 1853.6 1953.6 2153.6 2053.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 444 x 44 x 4/40 = 1953.6
Number System What least number must be subtracted from 2641 so that the remainder left, when divided by 10,15 and 25, is 7 in each case ? 81 87 84 94 81 87 84 94 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP LCM of 10, 15, 25 = 150When we drive 2641 by 150 the remainder is 91.But the remainder should be 7.So, the number to be subtracted from 2641 is 91 - 7 = 84.
Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 636 673 724 845 636 673 724 845 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100 = 636
Number System If 2^(2x-1) = 8^(3-x), then the value of x is: 5 2 9 6 5 2 9 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2
Number System The average of 7 numbers is 15, that of the first three is 6 and that of the last three is 23. What is the fourth number? 7 13 18 15 7 13 18 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4th No. = (Total of 7 Nos) - (Total of first three + total of last 3) = (15 x 7) - (6 x 3 + 23 x 3) = 105 - (18 + 69) =105 - 87 = 18
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