Home › TS EAPCET (Engineering) › Mathematics › Binomial Coefficients › What is 1 + 16 + 36 + 16 + 1, the sum of squares…
What is 1 + 16 + 36 + 16 + 1, the sum of squares of the entries of row 4 of Pascal's triangle?
A70
B72
C64
D60
Answer & Solution
Correct answer: A. 70
The squares of row n sum to the middle entry of row 2n, which is the middle entry 70 of row 8.
Related questions
A pizza shop offers 9 toppings. How many ways can a customer pick 3 different toppings?How many 4-element subsets does the set {1, 2, ..., 8} have?In the multiplicative formula, what does the denominator k factorial correct for?How many 5-bit words made of 0s and 1s contain exactly two 1s?In (1 + x) to the power n, the coefficient of which term is n choose k?If k is greater than n, how is the binomial coefficient commonly defined?In row 6, what is the sum of the three middle entries?The sum of squares of row n equals the middle entry of which row?