Number System How many numbers up to 100 are divisible by 7? 14 100 93 107 14 100 93 107 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System Find the least value of 3x + 4y if x2y3 = 6. 3 10 6 7 3 10 6 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
Number System On converting the following base-2 numeral in base ten, 1101101, we get 109 108 106 107 109 108 106 107 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
Number System The sum of the two numbers is 12 and their product is 35. What is the sum of the reciprocals of these numbers? 7/32 1/35 12/35 35/8 7/32 1/35 12/35 35/8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be a and b. Then,a + b = 12 and ab = 35.(a + b)/ab = 12/35= (1/b + 1/a) = 12/35Sum of reciprocals of given numbers = 12/35.
Number System In a 150-litre mixture of milk and water, the percentage of milk is 84%. How much water should be added so that the percentage of milk becomes 52.5% ? 95 litre 90 litre 80 litre 85 litre 95 litre 90 litre 80 litre 85 litre ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In 150 litre, milk is 84%ie 150 x 84/100 = 126 litre Let us add x litres of waterTherefore, the quantity of mixture = 150 + x∴ 52.5% of (150 + x) = 126 litres 150 + x = 126x100/52.5 = 240 litres∴ x = 240 - 150 = 90 litres
Number System {(742)² ÷ 36} ÷ 2 = ? 422.5 423.5 421.5 420.5 422.5 423.5 421.5 420.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (174 x 174/36) ÷ 2 = 841/2 = 420.5
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