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In the expansion of (1x + -1y)^10, find the coefficient of x^3y^7.
Correct answer(s):
- -120
In the expansion of (3x + -1y)^8, find the coefficient of x^5y^3.
Correct answer(s):
- -13608
In the expansion of (1x + -1y)^10, find the coefficient of x^3y^7.
Correct answer(s):
- -120
In the expansion of (3x + -1y)^8, find the coefficient of x^3y^5.
Correct answer(s):
- -1512
In the expansion of (3x + 1y)^11, find the coefficient of x^8y^3.
Correct answer(s):
- 1082565
In the expansion of (3x + 1y)^10, find the coefficient of x^2y^8.
Correct answer(s):
- 405
In the expansion of (3x + 2y)^6, find the coefficient of x^1y^5.
Correct answer(s):
- 576
In the expansion of (2x + 2y)^8, find the coefficient of x^2y^6.
Correct answer(s):
- 7168
In the expansion of (2x + 1y)^10, find the coefficient of x^9y^1.
Correct answer(s):
- 5120
For a geometric progression with first term -3 and common ratio 3, find the sum of the first 6 terms.
Correct answer(s):
- -1092
For a geometric progression with first term 2 and common ratio 3, find the 8th term.
Correct answer(s):
- 4374
For a geometric progression with first term -2 and common ratio 3, find the sum of the first 6 terms.
Correct answer(s):
- -728
For a geometric progression with first term 2 and common ratio -2, find the 7th term.
Correct answer(s):
- 128
For a geometric progression with first term 3 and common ratio 3, find the sum of the first 7 terms.
Correct answer(s):
- 3279
For a geometric progression with first term 4 and common ratio -2, find the 9th term.
Correct answer(s):
- 1024
For a geometric progression with first term 5 and common ratio 1/2, find the sum of the first 8 terms.
Correct answer(s):
- 1275/128
For a geometric progression with first term -3 and common ratio 1/2, find the 8th term.
Correct answer(s):
- -3/128
For a geometric progression with first term 1 and common ratio 1/2, find the sum of the first 8 terms.
Correct answer(s):
- 255/128
For a geometric progression with first term 4 and common ratio 1/2, find the 7th term.
Correct answer(s):
- 1/16
For a geometric progression with first term 3 and common ratio 3, find the sum of the first 8 terms.
Correct answer(s):
- 9840