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B
4000
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C
3900
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D
3600
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Solution
The correct option is D 3600 5×198×4=5×4×198 [Using commutative property for 198 and 4] =20×198 [∵5×4=20]=20×(200−2)[∵198=200−2]=20×200−200×2 [Applying distributive property of multiplication over subtraction] =4000−400=3600