Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 77 78 76 75 77 78 76 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
Number System The sum of three consecutive multiples of 3 is 72. What is the largest number? 24 27 21 36 24 27 21 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27.
Number System What is the sum of all the prime numbers from 20 to 40? 120 117 118 119 120 117 118 119 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
Number System How many numbers up to 200 are divisible by 2 and 3 both? 27 33 29 35 27 33 29 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 200/6 = 33 2/6 => 33 Numbers
Number System Of the three numbers, second is twice the first and is also thrice the third. If the average of the three numbers is 44, the largest number is 38 72 44 56 38 72 44 56 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 72
Number System (4300731) - ? = 2535618 1675123 1865113 1775123 1765113 1675123 1865113 1775123 1765113 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4300731 - x = 2535618Then, x = 4300731 - 2535618 = 1765113
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