Answer:A)0.75
Step-by-step explanation:
Given
There are four options to a question
out of which one is correct with 4 points
one is wrong but carries 1 point
Other two are wrong with a negative Point
Probability of selecting an option is
Expected score
Expected score=1+0.25-0.5
Expected score=0.75
Answer:
Partial products are 300, 150, 20 and 10. The value of 15×32 is 480.
Step-by-step explanation:
We need to find the partial products of 15×32.
First write each number as the sum of their place values.
Now, write 10 and 5 in first row, and 30 and 2 in first column as shown below:
10 5
30 30×10=300 30×5=150
2 2×10=20 2×5=10
Therefore partial products are 300, 150, 20 and 10.
Add these partial product to get the value of product.
The value of 15×32 is 480.