Question

Tell the ans for this


IT SHOULD BE IN STEPS BY STEPS ​

Answer 1

Step-by-step explanation:

2, 1, 2, 3, 1, 2, 3, 4, 1, 2, 3, 4, 5…. The sequence is built in the following way: at first the number 1 is written out, then the numbers from 1 to 2, then the numbers from 1 to 3, then the numbers from 1 to 4 and so on.

Find the number on the n-th position of the sequence.

Examples :

Input : n = 3

Output : 2

The 3rd number in the sequence is 2.

Input : 55

Output : 10

Answer 2

n(A) = 8

$\rule{10cm}{0.05cm}$

$\bf\huge\underline{\underline{ Given :- }}$

• A = { 1 , 2 , 3 , 4 , 5 , 7 , 9 , 11 }

$\bf\huge\underline{\underline{ To \: Find:- }}$

• n(A)

$\bf\huge\underline{\underline{ Answer :- }}$

• A = { 1 , 2 , 3 , 4 , 5 , 7 , 9 , 11 }

• n(A) means means number of elements in that set

• . Here , 8 elements are there .

So , n(A) = 8

$\rule{10cm}{0.05cm}$