Number System What is the difference between the largest and the smallest number written with 7, 7, 0, 7? 693 6993 6093 6893 693 6993 6093 6893 ANSWER DOWNLOAD EXAMIANS APP
Number System In how many different ways can the letters of word "SENTENCE" be arranged ? 2360 3260 3360 6460 2360 3260 3360 6460 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 8!/3! 2! = 40320/12 = 3360
Number System The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 3/10 4/5 5/4 3/5 3/10 4/5 5/4 3/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/x - x = 9/20 20x2 + 9x - 20 = 0 20x2 + 25x - 16x - 20 = 0 5x(4x + 5) -4(4x + 5) = 0(4x + 5)(5x - 4) = 0x = 4/5
Number System A number consists of 3 digit whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. The number is: 352 370 145 253 352 370 145 253 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the middle digit be x. Then, 2x = 10 or x = 5.So, the number is either 253 or 352. Since the number increases on reversing the digits, so the hundred's digit is smaller than the unit's digit. Hence, required number = 253.
Number System In how many different ways can the letters of the word ANATOMY be arranged ? 2520 2510 2508 2504 2520 2510 2508 2504 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Here total letters are 7 but A comes twice.Therefore, Numbers of arrangements = 7!/2! = 2520
Number System What is 50% of 40% of Rs. 3,450? 690 640 670 630 690 640 670 630 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 40% * 3450 = 1380then, 50 % * 1380 = 690
EXAMIANS