B. 7 / 7
ExplanationStep 1: In (1+x)^n coefficient of x^r is nCr. Step 2: For x r=1 so 7C1 = 7. Step 3: Coefficient of first power is n.
Step 1: (1+x)^n में x^r का coefficient nCr होता है। Step 2: x के लिए r=1 इसलिए 7C1 = 7। Step 3: First power का coefficient n होता है।
Tap once to confirm. On the next tap, login will open for the answer.
Tap once to confirm. On the next tap, login will open for the answer.
Tap once to confirm. On the next tap, login will open for the answer.
Tap once to confirm. On the next tap, login will open for the answer.
Tap once to confirm. On the next tap, login will open for the answer.
Tap once to confirm. On the next tap, login will open for the answer.
Use Google login or mobile OTP. Admin can block users and control login providers.
Quiz questions, daily challenge and practice pages will open according to your selected class.