The phenomenon of splitting white light into its

What will come in place of (?) in the given expression.

(15) ² - (13) ² = ?

3(2/3) of 2(5/11) of 5(2/5) of 75 = ?

What will come in the place of question mark (?) in the given expression?

(125 × 64) ÷ (8 × 5) + (12.5)² – (144 ÷ 3) = ?

Find the HCF of 15x² + 8x – 12, 3x² + x – 2, 3x² - 2x, 9x² - 12x + 4

52% of 400 + √(?) = 60% of 600 - 25% of 400

(?) x 3 + 68 = √9025

What will come in the place of question mark (?) in the given expression?

? = {1026 ÷ 54 + 17 × 13 – (384 ÷ 24)} 

(√2704 x 55)/(245 + 120) = ?

(29² – 141) ÷ 5 + (40 ÷ 2) + 2³ = ?

2*1/3 + 22*1/3 + 222*1/3 + 2222*1/2 + 22222*1/2 = ?