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Chapter 6- Exchange Rate concept
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The different concepts are explained here

Arpita Prakash
YouTuber NCERTs series initiator at Unacademy 'Educator of the Month' for Feb'19 CBSE 0.1% Merit Certificate holder in Mathematics

Comments
(5)
U
Unacademy user
bhai plz zyda se zyada numerical solve krao
Abhishek Dass
a year ago
poori koshish hain
I think the continuation of lesson 15 is not exactly lesson 16. Lesson 16 is repeating itself in lesson 22. There could be an error. Could you please help me with this, please?
Ma'am, lesson 22 and lesson 16 are almost same. The slides are identical.
Arpita Prakash
5 months ago
It might have got republished because of tech error ,,
Ma'am, lesson 22 and lesson 16 are almost same. The slides are identical.
thank you so much mam