A shopkeeper bought an article and marked it at Rs. 250. By selling the article at a discount of 4%, he earns a profit of 20%. Find the cost price of the article.

If x⁴ + x³ + x² + x + 1 = 0, then find the value of x¹⁵²⁵ + x⁷²⁰ + 14 + x³²⁰ =?

Find the value of ‘x’ in the given expression

(49/16)^x× (64/343)^x-1= 4/7

If x = 3 + 2√2 and y = 3 - 2√2

Then find the value of 1/(x+1) + 1/(y+1)?

1/3 + 1/15 + 1/35 + 1/63 + 1/99 = ?

If (x² + 1)/x = 3, what is the value of (x¹² + 1)/x ⁶ ?

[a/(2a²  + 5a + 2)] = 1/6 , then find the value of (a+1)/a ?

If x ,y,zarethreeintegerssuchthat x +y =8,y +z =13and z +x =17,thenthevalueof x ² /yz is:

If (x – 3) is a factor of (x² + 4qx – 2q), then the value of q is: