34. The average of first three numbers is double of the fourth number. If the average of all the four numbers is 12. Find the 4th number
पहले तीन नंबरों का औसत चौथे नंबर का दोगुना है। यदि सभी चार संख्याओं का औसत 12. है तो 4 नंबर ज्ञात कीजिए
ਪਹਿਲੇ ਤਿੰਨ ਨੰਬਰਾਂ ਦਾ ਔਸਤ 4ਥੇ ਨੰਬਰ ਨਾਲੋਂ ਦੁਗਣਾ ਹੈ ਤਾਂ ਜੇਕਰ 4ਨੰਬਰਾਂ ਦਾ ਔਸਤ 12 ਹੈ ਤਾਂ 4ਥਾ ਨੰਬਰ ਪਤਾ ਕਰੋ।
(a) 16 (b) 48/7 (c) 2 (d) 18/7
answer: c
(4)
5/5 - (1 vote)
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