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If r, s,t are prime numbers and p, q are the positive integers such that LCM of p, q is r^2s^4t^2,

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If r, s,t are prime numbers and p, q are the positive integers such that LCM of p, q is r2s4t2, then the number of ordered pairs (p, q) is

(a) 252

(b) 254

(c) 225

(d) 224

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The correct option is (c) 225

Explanation:

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