The sum of first 50 natural numbers is:
1050
1175
1225
1275
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The nth term of an Arithmetic Progression (A.P.) is 2n + 5. The 10th term is :
7
15
25
45
The first term of an A.P. is 7 and the common difference is 3. The general term of the A.P. is:
Tn = 3n − 4
Tn = 2n + 5
Tn = 3n + 4
None of these