Easy
1 point
ID: #26238
Question
a + b = 5 এর a - b = 3 হলে, ab এর মান কত?
Options
1
4
Correct Answer
2
5
Correct Answer
3
3
Correct Answer
4
2
Correct Answer
Explanation
আমরা জানি, $4ab = (a+b)^2 - (a-b)^2 = 5^2 - 3^2 = 25 - 9 = 16$। সুতরাং $ab = 16/4 = 4$।
Actions
Type
Single Choice
Created By
admin@chakribidda.com