Question

If 1/2 + 1/6 + 1/12 + 1/20 + 1/30 + 1/42 + 1/56 + 1/72 + 1/90 = p/q and the HCF of (p,q) = 1, then find p× q = ?
1. -1/4
2. -1/9
3. -1
4. -4/9
​

Answer 1

4) -4/9 WILL BE THE RIGHT ANSWER