5 संख्याओं का औसत 10 है कौन सी संख्या जोड़ी जाए की औसत 12 हो जाए
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3
Answer:
you should add 22
Step-by-step explanation:
sum= no.×avg
sum=5×10
=50
we want avg 12
sum= avg× no.
sum=12 ×6
( already we have 5 no. when we add a new then we have 6 no. )
sum=72
then added no. is = new avg - old avg
=72 -50
=22 is the answer
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