A man sold a fan for Rs. 400. Find the cost price if he incurred a loss of 15%.

Cost price of the fan is .

Step-by-step explanation:

Given: A man sold a fan for  . He incurred a loss of .

To find: The cost price of the fan

Solution:

We have,

Selling price, S.P.,  of the fan

Loss

We know that

Now let the C.P. of the fan be

So,

Hence, the cost price of the fan is .

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⭐

hope it

step-by-step explanation:

x^(1/6) · x^(1/6) · x^(1/6)   ·x^(1/6) = x^(4/6)   since we add the exponents

4/6 can be simplified to 2/3

the simplified form is x^(2/3)