The number of integers satisfying log1x2(x−2)(x+1)(x−5)≥1 is
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a
0
b
1
c
2
d
3
answer is A.
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Detailed Solution
Case I: 1/x>1 or 00 since x2+5 >0 for all x∈R⇒ x∈(−1,0)∪(5,∞)Hence, no solution in this case. Case II: 0<1x<1 or x>1 →1 ∴ 00 ⇒x∈ -1,2∪5,∞→ 3 from 1,2,3 we can take x∈(1,2)