Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Mathematics Sequences and Series Arithmetic Progressions
p, q, r and s are in AP such that p + s = 8 and qr = 15. What is the difference between largest and smallest numbers ?
1
6
2
5
3
4
4
More than one of the above
5
None of the above