Number System 8988 / 8 / 4 = ? 280.875 561.75 2247 4494 280.875 561.75 2247 4494 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8988 * 1/8 * 1/4 = 2247/8 = 280.875
Number System 84 * 29 + 365 = ? 2801 2436 - 2071 - 2801 2801 2436 - 2071 - 2801 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP - 84 * (30 - 1) + 365= - (84 * 30) + 84 + 365= - 2520 + 449 = - 2071
Number System If 70% of an equal to 40% of b, then ratio between a and b is? None 7: 11 4: 7 7: 4 None 7: 11 4: 7 7: 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 70 a = 40 ba: b = 4: 7
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 5 11 7 3 5 11 7 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
Number System The square root of 0.0081 is: 0.91 0.09 0.009 0.9 0.91 0.09 0.009 0.9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.09
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% ? 21 litre 25 litre 17 litre 29 litre 21 litre 25 litre 17 litre 29 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
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