\binom74 = \frac7!4! \times (7-4)! = \frac7 \times 6 \times 5 \times 4!4! \times 3 \times 2 \times 1 = \frac7 \times 6 \times 53 \times 2 \times 1 = \frac2106 = 35 - Abu Waleed Tea