Question

2 raised to power of n -7 × 5 rasied to power of n- 4 = 1250

Answer 1

${2}^{n - 7} \times {5}^{n - 4} = 1250 \\ n - 4 \times n - 7 = {1250}^{10} \\ {n}^{2} - 28 = {1250}^{10}$