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r, s, t are prime numbers and p, q are n...

r, s, t are prime numbers and p, q are natural numbers such that LCM of p, q is `r^(2)" "s^(4)" "t^(2)`, then the number of ordered pairs (p,q) is

A

252

B

254

C

225

D

224

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The correct Answer is:
C
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