Number System How many numbers up to 200 are divisible by 2 and 3 both? 35 27 29 33 35 27 29 33 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 200/6 = 33 2/6 => 33 Numbers
Number System The sum of two numbers is 165 and the difference between them is 9. What is the average of these two numbers ? 85.5 82.5 84.5 83.5 85.5 82.5 84.5 83.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 165x - y = 92x = 174 ∴ x = 87 and y = 78∴ x + y/2 = 165/2 = 82.5
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 25.84 24.84 27.84 21.84 25.84 24.84 27.84 21.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 19765 20160 17453 18456 19765 20160 17453 18456 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 36 48 52 56 36 48 52 56 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
Number System (12)² - (4.4)² - (0.04)² = ? 124.6384 125.6384 129.6384 131.6384 124.6384 125.6384 129.6384 131.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
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