According to NCF 2005, school Mathematics takes place in a situation where
children are listeners and the teacher is an active narrator
children are involved in chorus drill of formulae and pressure of performance in examination
Mathematics is part of children's life experience
children are forced to learn all concepts by daily practice
A teacher gives the following problem related to 'discount' to the students for solving. "The Marked Prices (MP) of a shirt and sweater are <200 and ? 300 respectively and the discounts on the marked prices of shirt and sweater are 20% and 12%, respectively. While preparing the bill, the shopkeeper interchanged the discounts on these items by mistake. On getting the bill, Hamida noticed the mistake and paid the actual amount to the shopkeeper. How much money did Hamida pay to the shopkeeper?"
What value does the teacher try to promote through this problem?
Co-operation
Sympathy
Compassion
Honesty
The additive inverse of S, where
S = 1 - 2 + 3 - 4 + 5 - 6 + 7 - 8 + ... + 49 - 50, is
- 25
1
0
25
If a = 3129 x 5128 x 722 ,
b = 3128 x 5129 x 721,
c = 3128 x 5129 x 721 and
d = 3127 x 5128 x 724, then HCF of a, b, c and d is
3128 x 5129 x 721
3127 x 5128 x 721
3127 x 5128 x 722
3128 x 5128 x 721
The sum of mean, mode and median of the data 6, 3, 9, 5, 1, 2, 3, 6, 5, 1, 3 is
12
13
10
11
C.
10
6, 3, 9, 5, 1,2,3,6, 5, 1, 3
Arranging them in ascending order,
we get
1, 1, 2, 3, 3, 3, 5, 5, 6, 6, 9
Mean of the data
Mode of the data = 3, Median of the data = 3
Natural numbers 4 to 15 are written on different slips (one number on one slip), kept in a box and mixed well. Renu picks up one slip from the box without looking into it. What is the probability that this slip bears a prime number?
In the product of(5x + 2) and (2x2 - 3x + 5), the sum of the coefficients of x2 and x is
9
- 8
- 9
8