Which cell organelle has a central core of a crystalline

25.22% of (59.9 × 8.01) + 69.97 =? 

What will be the approximate value of the following questions.

(89.90% of 479.88 - 2/5 of 400.11)² ÷ (50.11% of 359.77 + √224.85) = ?

41.97 × 5.12 ÷ 2.99 + 49.89 = ?× 1.99

If tan θ + cot θ = 16, then find the value of tan²θ + cot²θ.

What approximate value should come in the place of (?) in the following questions?

42.98% of 849 + 18.45% of 1201 ≈ ?

(84.92 + 235.17) ÷ (15.93 × 3.89) = ? ÷ 21.02

(13.13 ×  32.98) + 20.15% of 649.99 = ? + 122.34

√2024.84 + (24.86% of 1999.81) - (3/8 of 800.15) = ?