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प्रश्न
What is 20th term from the end of the AP 3, 8, 13, ..., 253?
विकल्प
163
158
153
148
MCQ
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उत्तर
158
Explanation:
Common difference d = 8 – 3 = 5 and last term l = 253.
The 20th term from the end = l – (20 – 1)d
= 253 – 19 × 5
= 253 – 95
= 158
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