Question 13 Marks
In an A.P., the first term is -5 and the last term is $4 5$. If the sum of $n$ terms in the A.P. is $1 2 0$, then complete the activity to find $n$.
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Complete the following activities and rewrite it ( 3 marks)
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3 questions · self-marked practice — reveal the answer and mark yourself.
Question 23 Marks
For an $A.P., a = 12$ and $d = 4$ Complete the following activity to find $S_{30}$ of the $A.P$
Here, $a = 12, d = 4, S_{30} = ?$
View full question & answer→Here, $a = 12, d = 4, S_{30} = ?$
Question 33 Marks
Complete the following activity to find the sum of all two-digit numbers divisible by 8.
Two-digit numbers divisible by 8 are 16, 24, 32, ..., 88, 96.
Two-digit numbers divisible by 8 are 16, 24, 32, ..., 88, 96.