4 different sets of objects contained 2,5,6, and 7 objects, respectively. How many unique combinations can be formed by picking one object from each set. A. 400

B. 420

C. 20

D. 114

a² + b²= c²

24² + 7² = c²

c= 25

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

answer: 40.95

step-by-step explanation:

answer: it's d

step-by-step explanation: