16.
Find the sum of the first 12 odd numbers.
- A.280
- C.320
- B.180
- D.144
- Answer
- Report
Answer : [D]
17.
Find the sum.13+15+...+47
- A.120
- C.220
- B.230
- D.540
- Answer
- Report
Answer : [D]
18.
How many terms of the series 230+227+224+....make a sum of 4200
- A.20
- C.32
- B.21
- D.43
- Answer
- Report
Answer : [B]
19.
Find the three numbers in A.P whose sum is 21 and sum of their squares is 179
- A.3,5,7
- C.6,13,20
- B.5,9,13
- D.3,7,11
- Answer
- Report
Answer : [D]
20.
In an A.P the seventh and nineth terms respectively 16 and 20 find the nth term
- A.2n+2
- C.2n
- B.n+4
- D.n-4
- Answer
- Report
Answer : [A]
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