CLASS-IX MOCK TEST (06-08-2021)

Quiz
•
Mathematics, English
•
9th - 12th Grade
•
Hard
RAGHAVENDRAN R
Used 1+ times
FREE Resource
19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The expansion of (x + y)n where x and y any two real numbers and n is any positive integer, maybe stated as follows
nC0 xn - nC1 xn-1 y + nC2 xn-2 y2 - nC3 xn-3 y3 … + nCn yn
nC0 xn + nC1 xn-2 y + nC2 xn-1 y2 + nC3 xn-3 y3 … + nCn yn
nC0 xn + nC1 xn-1 y + nC2 xn-2 y2 + nC3 xn-3 y3 … (-1)n yn
nC0 xn + nC1 xn-1 y + nC2 xn-2 y2 + nC3 xn-3 y3 … + nCn yn
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The expansion of (x - y)n where x and y any two real numbers and n is any positive integer, maybe stated as follows
nC0 xn - nC1 xn-1 y + nC2 xn-2 y2 - nC3 xn-3 y3 … + nCn yn
nC0 xn - nC1 xn-1 y + nC2 xn-2 y2 - nC3 xn-3 y3 … (-1)n ncn x0 yn
nC0 xn - nC1 xn-1 y + nC2 xn-2 y2 + nC3 xn-3 y3 … (-1)n yn
nC0 xn + nC1 xn-1 y + nC2 xn-2 y2 + nC3 xn-3 y3 … + nCn yn
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The total number of terms that comes in the expansion of (x+y)n is
n
n-1
n+1
none of thse
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tr + 1 =
nCr xn-r . yr
xn-r . yr
nC0 xn + nC1 xn-1 . y + nC2 xn-2 . y2 + … + nCn yn
nC0 xn - nC1 xn-1 . y + nC2 xn-2. y2 + … + nCn yn
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The middle term in is
both 1 & 2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The greatest binomial co-efficient in (x+a)n is
when n is odd
when n is even
when n is even
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The middle term in (x+y)n is ______
when n is odd
when n is even
when n is odd
both 1 & 3
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