Number System 486+32×25—59=? 528 582 596 567 528 582 596 567 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
Number System What number should come in the place of (?) in the following number series ? 1, 4, 9, 25, 49, ?, 169, 289, 361 11 225 321 121 11 225 321 121 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is (Prime No.)²So it is (11)² = 121
Number System The product of two consecutive position odd numbers is 6723. What is the smaller number? 71 74 83 79 71 74 83 79 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP n x (n + 2) = 6723= n² + 2n - 6723 = 0= n² + 83n - 81n - 6723 = 0= n(n + 83) - 81 (n + 83) = 0Therefore, (n - 81) (n + 83) = 0Therefore, n = 81, n + 2 = 83
Number System 384×12×2=? 8465 7487 6123 9216 8465 7487 6123 9216 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9216
Number System The difference between a two-digit number and the number obtained by interchange the two digits of the number is 27. If the sum of the two digits of the number is 13, what is their product ? 39 40 38 37 39 40 38 37 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ 10x + y - (10y + x) = 27or 9x - 9y = 27∴ x - y = 3 .......(I)x + y = 13 .......(II)From eqn (I) and (II)x = 8 and y = 5.So the number = 85Therefore, product = 8 x 5 = 40
Number System What is the difference between the largest number and the least number written with the figures 3, 4, 7, 0, 3? 43893 43983 43883 70983 43893 43983 43883 70983 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 74330 Largest30347 Smallest-------------43983
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