Question

यदिp+q= 9 है, pq = 20 है, तो (p-q) का मान हो
(a) 161
(b) 81
(c) 80
(d)1
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Answer 1

Answer:

(d)

Step-by-step explanation:

p+q=9 so p means 5 & q means 4

pq = 20 means p × q = 20

(p-q) means 5-4=1