or
or
***The question is erroneous.
Let the number of each type stamps is S.
Now, 10 TK = 10 x 100 paisa = 1000 paisa
So, 20S + 30S = 1000
or, 50S = 1000
or, S = 100/50 = 20
So, the number of total stamps = 20 + 20 = 40
আপনি আমাকে যেকোনো প্রশ্ন করতে পারেন, যেমনঃ
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