Mathematics

Q21

Rahi buys some toffees at 2 for a rupee and sells them at 5 for a rupee. His loss percentage is

Q24

A merchant has 1000 kg of sugar, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. The quantity sold at 18% profit is:

Q25

240 balls are placed in boxes with each having 4 more than the next. Which cannot be value of n?

Q26

The number of times in a day the hour hand and minute hand of a clock are at right angles is:

Q30

If the 5th term of an arithmetic sequence is 18 and the 15th term is 58, what is the sum of the first 25 terms?

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