Number System In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ? 58 54 56 60 58 54 56 60 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP One girl can be chosen in 4C1 = 4 ways and 4 boys can be chosen in 6C4 = 15 ways ∴ Total number of ways = 4 x 15 = 60 ways.
Number System On dividing a number by 68, we get 269 as quotient and 0 as remainder. On dividing the same number by 67, what will be the remainder? 3 1 2 0 3 1 2 0 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = 269 * 68 + 0 = 1829267) 18292 (273 18291 -------- 1Required number = 1.
Number System The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ? 245 295 225 275 245 295 225 275 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x.Therefore, 72% of x - 49% of x = 575Therefore, (72 - 49)% of x = 575Therefore, 9% of x = 575/23 x 9 = 225
Number System What is the difference between the largest and the smallest number written with 7, 7, 0, 7? 6093 6893 6993 693 6093 6893 6993 693 ANSWER DOWNLOAD EXAMIANS APP
Number System Supply the missing figure : 3, 11, 8, 16, 13 .... 18 21 12 18 28 21 12 18 28 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 20160 17453 18456 19765 20160 17453 18456 19765 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
EXAMIANS