Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 2 None 6 4 2 None 6 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System What is the difference between the largest number and the least number written with the figures 3, 4, 7, 0, 3? 43883 43893 43983 70983 43883 43893 43983 70983 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 74330 Largest30347 Smallest-------------43983
Number System Find the least number which when divided by 35 and 11 leaves a remainder of 1 in each case. 384 391 386 388 384 391 386 388 ANSWER DOWNLOAD EXAMIANS APP
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? 15 7 18 13 15 7 18 13 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 If the average of two numbers is 88.5 and one number is 5.5 less than the average. Find out the next number. 94 97 91 86 94 97 91 86 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 94
Number System 20% of the total number of students in a school play football. How many students do not play football if the total number of students in the school is 7600 ? 5976 6000 6080 5800 5976 6000 6080 5800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080
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