If the system of equations x + y + z = 6, 2x + 3y + 4z = 20, 3x + 5y + kz = 34 has a unique solution, then k must not equal:
A7
B6
C5
D8
RRBMathematics
The value of tan 45° is:
A1
B0
C√3
D1/√3
Class 12Mathematics
The position vector of the point dividing the line joining points with position vectors 2î − 3ĵ + k̂ and 4î + ĵ − 5k̂ externally in the ratio 2 : 1 is:
A6î + 5ĵ − 11k̂
B8î − 5ĵ + 9k̂
C6î − 7ĵ + 9k̂
D8î + 5ĵ − 9k̂
Class 7Mathematics
The marks of 8 students in a test are: 12, 15, 18, 12, 20, 15, 12, 16. What is the mode?
A12
B15
C16
D18
Class 8Mathematics
If 7y + 4 = 2y − 11, then y =:
A−3
B3
C15
D−15
BITSATMathematics
If sin theta + cos theta = 1, then sin(2*theta) equals:
A0
B1
C-1
D1/2
BITSATMathematics
The integral of sin(x) dx is:
Acos(x) + C
B-cos(x) + C
Csin(x) + C
D-sin(x) + C
BITSATMathematics
The distance of the point (1, 2, 3) from the plane x - y + z = 5 is:
Asqrt(3)
B1
C2/sqrt(3)
D4/sqrt(3)
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