Number System What least number shall be added to 4700 to make it a perfect square ? 61 81 71 91 61 81 71 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (69)² = 4761 and (68)² = 4624Clerly 4624 < 4700 < 4761So 61 should be added to make 4700 a perfect square.
Number System 4550 ÷ 25% of ? = 130 135 130 140 125 135 130 140 125 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4550 ÷ ? x 25/100 = 130= 4550 ÷ ?/4 = 130= 4550 x 4/? = 130= ? x 130 = 4550 x 4= ? = 4550 x 4/130 = 140
Number System The average of 7 numbers is 15, that of the first three is 6 and that of the last three is 23. What is the fourth number? 7 18 13 15 7 18 13 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4th No. = (Total of 7 Nos) - (Total of first three + total of last 3) = (15 x 7) - (6 x 3 + 23 x 3) = 105 - (18 + 69) =105 - 87 = 18
Number System Sum of two consecutive even terms lacks by 98 from their product. Find the sum of these number None 32 24 18 None 32 24 18 ANSWER DOWNLOAD EXAMIANS APP
Number System If the sum of one-half of a number exceeds one-third of that number by 7 1/3, the number is: 15 30 18 20 15 30 18 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,(1/2 x + 1/5 x) - 1/3 x = 22/311/30 x = 22/3x = 20
Number System If one third of 3/4 of a number is 21. Then find the number? 84 630 63 840 84 630 63 840 ANSWER DOWNLOAD EXAMIANS APP
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