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Let `X_n = { z=x+iy : |z|^2 le 1/n}` for all integers `n ge 1` ,Then , `cap_(n=1)^(oo) X_n` is
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Let `d (n)` denotes the number of divisors of `n`
including `1` and itself. Then, `d (225), d (1125
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In `Delta ABC`, if `a^2 cos^2 A- b^2 - c^2 = 0`, then
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If `g` is the acceleration due to gravity on the surface of the earth, the gain in potential
epergy
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Three bodies of the same material and
having masses `m, m` and `3m` are at
temperatures `40^(o) C,
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Tautomerism is exhibited by
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