Number System In how many different ways can the letters of the word TEST' be arranged ? 8 16 10 12 8 16 10 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12
Number System 3√103823 = ? 41 47 44 52 41 47 44 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by: 9 3 11 5 9 3 11 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and unit's digit be y. Then, number 10x + y.Number obtained by interchanging the digits = 10y + x.(10x + y) + (10y + x) = 11(x + y)which is divisible by 11.
Number System If one third of 3/4 of a number is 21. Then find the number? 630 840 84 63 630 840 84 63 ANSWER DOWNLOAD EXAMIANS APP
Number System In how many different ways can the letters of the word FORMULATE be arranged ? 372880 382880 362880 392880 372880 382880 362880 392880 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of letters = 9! = 9*8*7*6*5*4*3*2*1 = 362880
Number System What is the sum of all the prime numbers from 20 to 40? 117 119 120 118 117 119 120 118 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
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