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A cyclist travels on a road parallel to railway track at a constant speed of 10 km/hour. He meets the train daily, at crossing, which also travelled i...

How many positive integral pairs of (x, y) satisfy y2 = x4 + x2 + 1?

Find the obtuse angle ÐABD, if area of triangle ABD, as shown in figure, is 8.75 cm2.

correct ans:6

correct ans: 7

is it 24?

1 + 1/2 + 1/3 = 1/4 +....... + 1/23 = n/23! Find the remainder when n is divided by 23.

In a sale, out of 30 buyers, 10 buyers bought 5 or fewer items, 22 buyers bought fewer than 8 items and 14 buyers bought at least 7 items. Find the nu...

How many two digit numbers are there such that last two digits of this number remain unchanged when it is cubed?