एक कक्षा में 15 लड़कों की औसत आयु 11 वर्ष है। यदि 9 वर्ष के 5 लड़के कक्षा में और सम्मिलित हो जाएँ, तो अब उनकी औसत आयु होगी– - Study24x7
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Nisha Tanwar
05 Dec 2019 01:47 PM study24x7 study24x7

 एक कक्षा में 15 लड़कों की औसत आयु 11 वर्ष है। यदि 9 वर्ष के 5 लड़के कक्षा में और सम्मिलित हो जाएँ, तो अब उनकी औसत ...

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A

 20 वर्ष

B

10 वर्ष

C

10.5 वर्ष

D

10.33 वर्ष

SSC Railways
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