Eyes 10, 20, 30, 40, 50, 60, 70, 80, 90, whats the next of 90
Answers
Given : 10, 20, 30, 40, 50, 60, 70, 80, 90
To find : whats is the next of 90
Solution:
10, 20, 30, 40, 50, 60, 70, 80, 90
This is an AP with Common Difference 10
20 - 10 = 10
30 - 20 = 10
40 - 30 = 10
and so on
so term after 90 would be 90 + 10 = 100
100 would be next to 90
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100 is the next term of the series.
Solution
Here we have,
• 1st term = 10
• 2nd term = 20
• 3rd term = 30
• 4th term = 40
• 5th term = 50
• 6th term = 60
• 7th term = 70
• 8th term = 80
• 9th term = 90
• 10th term = ?
If we observe this carefully we see, common difference b/w each term = 10.
We know formula for nth term :
aₙ = a + (n - 1)d
⇒ aₙ = 10 + (10 - 1) × 10
⇒ aₙ = 10 + 9 × 10
⇒ aₙ = 10 + 90
⇒ aₙ = 100