Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 510 720 640 860 510 720 640 860 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 is 432 times 119 ? 53408 52408 51408 50408 53408 52408 51408 50408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
Number System Find the number, when 15 is subtracted from 7 times the number, the result is 10 more than twice of the number 5 7.5 4 15 5 7.5 4 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.7x -15 = 2x + 10 => 5x = 25 => x = 5
Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 74 69 61 65 74 69 61 65 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65
Number System What is the sum of the local values of the digits 2, 3, 4, 5 in the number 2345? 2105 2435 2345 5243 2105 2435 2345 5243 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2000 + 300 + 40 + 5 = 2345
Number System If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 83/77 93/77 73/77 77/73 83/77 93/77 73/77 77/73 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
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