ExamPlay Dark Logo
היכנס

JEE Advance - Mathematics (1979 - No. 17)

$${}^n{C_{r - 1}} = 36,{}^n{C_r} = 84\,\,and\,\,{}^n{C_{r + 1}} = 126$$, then r is :
1
2
3
None of these.

הערות (0)

פִּרסוֹמֶת