Number System Find the number which multiplied by 15 is increased by 196. 28 14 26 20 28 14 26 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,15x - x = 196x = 14
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1092 1192 1200 1082 1092 1192 1200 1082 ANSWER DOWNLOAD EXAMIANS APP
Number System If 35% of a number is 899.5, what is 68% of that number ? 1747.6 1547.6 1847.6 2247.6 1747.6 1547.6 1847.6 2247.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6
Number System What is the sum of all the composite numbers up to 20? 128 132 130 131 128 132 130 131 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
Number System Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be? 7, 8 6, 9 10, 5 9, 6 7, 8 6, 9 10, 5 9, 6 ANSWER DOWNLOAD EXAMIANS APP
Number System The sum of the ages of a son and father is 65 years. After 5 years the age of father will be double of the age of son. What is the age of son ? 18 years 17 years 19 years 20 years 18 years 17 years 19 years 20 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the age of the son be x and the age of the father be y.Therefore, x + y = 65 ..........(i)or, 2 x (x + 5) = (y + 5)or, 2x + 10 = y + 5or, 2x - y = 5 ...................(ii)From equations (i) and (ii), x = 20, y = 45
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