Question

Find the $7^{\text{th}}$ term of pascals triangle

• A. 1655205561
• B. 1610201061
• C. 1615101561
• D. 1615201561

Answer 1

The correct option is D 1615201561

Pascal's triangle is a triangular array constructed by summing adjacent elements in preceding rows.
1
1 1
1 2 1 = 1 (1+1) 1
1 3 3 1 = 1 (1+2) (2+1) 1
1 4 6 4 1 = 1 (1+3) (3+3) (3+1) 1
1 5 10 10 5 1 = 1 (1+4) (4+6) (4+1) 1
Similarly,
1 6 15 20 15 6 1
= 1 (1+5) (5+10) (10+10) (10+5) (5+1) 1