Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1240 1260 1300 1280 1240 1260 1300 1280 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System 1827÷ 36 x ?=162.4 2.6 1.9 3.2 4.3 2.6 1.9 3.2 4.3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3.2
Number System If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: 80 40 88 44 80 40 88 44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40
Number System What is 25/2% of 482 times of 183 ? 12025.75 11025.75 12025.50 11050.75 12025.75 11025.75 12025.50 11050.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 25/2% of [482 x 183]= 25/2% of 88206= 25/2 x 88206 / 100= 88206 / 8= 11025.75
Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 860 720 640 510 860 720 640 510 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total six letters are there and hence the number of arrangements = 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ? 78 75 76 77 78 75 76 77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2 x 2 + 1 = 5;5 x 2 - 1 = 99 x 2 + 1 = 19: 19 x 2 - 1 = 3737 x 2 + 1 = 75
EXAMIANS