What is the value of 1+2+3+4+5+ ..... + 50?

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1+2+3+4+5+ ..... + 50 വിലയെത്ര ?

A2500

B1225

C2550

D1275

Answer:

D. 1275

Read Explanation:

ആദ്യത്തെ n എണ്ണൽസംഖ്യകളുടെ തുക =n(n+1)/2 =50 × [51/2] =1275

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