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एक व्यक्ति के 7 बच्चे है। जब उनकी औसत आयु 12, वर्ष थी। एक बच्चा जिसकी आयु 6, वर्ष थी मर जाता है । तब अन्य 6, बच्चो की औसत आयु ज्ञात करे?A. 13 yearsB. 10 yearsC. 11 yearsD. 14 years |
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Answer» Correct Answer - A According to the question Average age of 7 children =12 years Sum of ages of 7 children = 84 years If a child aged 6 years died then Sum of ages of 6 children =84-6=78 years `therefore` Average =`78/6`=13 years |
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