Number System In how many different ways can the letters of the word ANATOMY be arranged ? 2508 2510 2504 2520 2508 2510 2504 2520 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Here total letters are 7 but A comes twice.Therefore, Numbers of arrangements = 7!/2! = 2520
Number System The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ? Rs. 800 Rs. 830 Rs. 810 Rs. 820 Rs. 800 Rs. 830 Rs. 810 Rs. 820 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the price of a pen be 'x' and that of pencil be 'y' Then 87x + 29y = 783Multiplying eqn (i) by 30/29 we get (87x) x 30/29 + (29y) 30/29 = 783 x 30/29∴ 90x + 30y = 810
Number System The difference between two integers is 5. Their product is 500. Find the numbers. 15, 20 21, 26 30, 25 20, 25 15, 20 21, 26 30, 25 20, 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.
Number System If 5/7 of a number is 145, what is 180% of that number ? 355.4 375.4 365.4 345.4 355.4 375.4 365.4 345.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4
Number System What is the sum of all the composite numbers up to 20? 131 132 130 128 131 132 130 128 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
Number System What is 432 times 119 ? 50408 51408 52408 53408 50408 51408 52408 53408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
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