Most appropriate formative task to assess the student's understanding of data analysis is
Role play
Cross word
Survey-based project
Quiz
If a set A contains 5 elements then, the number of subsets of A where none of the subset is empty set, is
32
16
64
31
If(x - 2) is a factor of x3 + ax2 + bx + 16 and b = 4a, then respective values of a and b are respectively
2, - 8
- 2, 8
- 2, - 8
2, 8
C.
- 2, - 8
Let f(x) = x3 + ax + bx +16
Since, (x - 2) is a factor off (x).
f(2) = 0
i.e. 8 + 4a + 2b + 16 = 0
=> 8 + 4a + 8a + 16 = 0 [ b = 4a]
a = - 2
and b = 4a - 8
b = 4( - 2) = - 8
a = - 2, b = - 8
LCM and HCF of two numbers p and q are P and Q, respectively.
If P - p = q - Q, then
P - Q = p - q
pP = qQ
A person have some one rupee, 50 paise and 25 paise coins totalling Rs 210 in the ratio 5 : 6 : 8, then number of one rupee coin is
41
42
103
105