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What is the average of first 25 natural numbers?

A12

B20

C13

D17

Answer:

C. 13

Read Explanation:

(n+1)/2 = (25 + 1)/2 = 26/2 = 13


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ഒരു വ്യാപാരിയുടെ തുടർച്ചയായ അഞ്ചുമാസത്തെ വരുമാനം 2000 രൂപ, 2225 രൂപ, 2300 രൂപ, 2100 രൂപ, 2200 രൂപ, എന്നിവയാണ് 6 മാസത്തെ ശരാശരി വരുമാനം 2250 ആണെങ്കിൽ 6-ാംമാസത്തെ വരുമാനം എത്ര ?