Find the smallest number which when increased by 5, divisible by 6, 9, 15, 20 and 24?
Find the smallest number which when increased by 5, divisible by 6, 9, 15, 20 and 24?
A. 344
B. 355
C. 366
D. 377
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If the number obtained on interchanging the digits of a two-digit number is 18 more than the original number and the sum of the digits is 8, then what is the original number ?
If the number obtained on interchanging the digits of a two-digit number is 18 more than the original number and the sum of the digits is 8, then what is the original number ?A. 26
B. 35
C. 53
D. Cannot be determinedThe word Geometry has been derived from two Greek words:_____________?
The word Geometry has been derived from two Greek words:_____________?A. Geo means Earth
B. Metron means Measurement.
C. Hence Geomatery means
D. Earth measurementOranges are bought at 11 for a rupee and an equal number more at 9 a rupee. If these are sold at 10 for a rupee, find the loss or gain percent?
Oranges are bought at 11 for a rupee and an equal number more at 9 a rupee. If these are sold at 10 for a rupee, find the loss or gain percent?A. 1% gain
B. 2% gain
C. 1% loss
D. 2% lossThe average of the two-digit numbers, which remain the same when the digits interchange their positions, is__________?
The average of the two-digit numbers, which remain the same when the digits interchange their positions, is__________?A. 33
B. 44
C. 55
D. 66
Explanation:
Average = (11 + 22 + 33 + 44 + 55 + 66 + 77 + 88 + 99)/9
= [(11 + 99) + (22 + 88) + (33 + 77) + (44 + 66) + 55]/9
= [(4 * 110) + 55]/9 = 495/9 = 55Three 6 faced dice are thrown together. The probability that no two dice show the same number on them is__________?
Three 6 faced dice are thrown together. The probability that no two dice show the same number on them is__________?A. 7/12
B. 5/9
C. 1/36
D. 5/12
Explanation:
No two dice show same number would mean all the three faces should show different numbers. The first can fall in any one of the six ways. The second die can show a different number in five ways. The third should show a number that is different from the first and second. This can happen in four ways.
Thus 6 * 5 * 4 = 120 favourable cases.
The total cases are 6 * 6 * 6 = 216.
The probability = 120/216 = 5/9.A student has to opt for 2 subjects out of 5 subjects for a course. Namely commerce, economics, statistics, mathematics 1 and Mathematics 2, Mathematics 2 can be offered only if mathematics 1 has also opted. The number of different combinations of two subjects which can be opted is_________?
A student has to opt for 2 subjects out of 5 subjects for a course. Namely commerce, economics, statistics, mathematics 1 and Mathematics 2, Mathematics 2 can be offered only if mathematics 1 has also opted. The number of different combinations of two subjects which can be opted is_________?A. 5
B. 6
C. 7
D. 18Explanation:
Number of ways of opting a subject other than Mathematics II = 4C2. = 4x3x2!/2!x2 = 6.
Number of ways of selection of Mathematics II = 1
Therefore, Total Number of ways = 6+1 =7.