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  • Arithmetic Progression - 1
  • Ruby has 36 stamps in her collection. She adds 8 stamps t...
Multiple choice

Ruby has 36 stamps in her collection. She adds 8 stamps to her collection every month. How many stamps will she have at the end of 8th month?

  1. 85

  2. 95

  3. 105

  4. 115

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

8th term = dn + (a – d)              = 7 × 8 + (36 – 7)              = 56 + 29 = 85

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