In the second week of the sale, the prices are reduced by 25% of the previous week's price. In the third week of the sale, the price are again reduced by 25% of the previous week's practice. In the fourth week of the sale, the prices are again reduced by 25% of the previous week's price.

answer: the common difference is -0.10

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⭐

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation: