Number System (12)² - (4.4)² - (0.04)² = ? 131.6384 129.6384 125.6384 124.6384 131.6384 129.6384 125.6384 124.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
Number System The sum of three consecutive numbers is 87. The greatest among these three number is: 28 29 26 30 28 29 26 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x, x + 1 and x + 2 Then,x + (x + 1) + (x + 2) = 873x = 84x = 28Greatest number, (x + 2) = 30.
Number System Find the number which multiplied by 15 is increased by 196. 26 20 28 14 26 20 28 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,15x - x = 196x = 14
Number System In a five-litre mixture of milk and water the portion of water is 30%. How much milk should be added to the mixture so that the portion of water reduces to 5% ? 17 litre 25 litre 29 litre 21 litre 17 litre 25 litre 29 litre 21 litre ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Original mixture = 5 litre; Milk = 3.5 litre;Water = 1.5 litre Let x litre of milk be added so thatthe mixture becomes (x + 5) litres and the percentage of water becomes 5%So, 1.5 = (x + 5) x 5/10030 = x + 5∴ x = 25 litre
Number System The square root of 0.0081 is: 0.91 0.9 0.09 0.009 0.91 0.9 0.09 0.009 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.09
Number System What is 50% of 40% of Rs. 3,450? 670 640 690 630 670 640 690 630 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 40% * 3450 = 1380then, 50 % * 1380 = 690
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