Number System ?2704 x ?2209=? 1444 4444 2444 3444 1444 4444 2444 3444 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2444
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1240 1260 1280 1300 1240 1260 1280 1300 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System If the product of two successive positive integers is 4692, what is the smaller number ? 68 70 66 64 68 70 66 64 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 68 x 69 = 4692
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 289 1/289 289/290 290/289 289 1/289 289/290 290/289 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be a and b. Then,ab = 17, a = 1 and b = 17So, 1/a2 + 1/b2 = (a2 + b2)/a2 b2 = (12 + 172)/(1 * 17)2 = 290/289
Number System Find out the smallest possible number which will be divisible by 1122 as well as 153. 4366 3366 2366 1366 4366 3366 2366 1366 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3366
Number System The sum of the two digits of a two-digit number is 15 and the difference between the two digits of the two digit number is 3. What is the product of the two digits of the two digit number ? 36 54 14 None of these 36 54 14 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10 x + yWhere x > yAccording to the question,x + y = 15 and x - y = 3Solving both the equations,x = 9, y = 6∴ x x y = 9 x 6 = 54
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