1.
क्रम विनिमेय नियम a + b = b + a की जाँच करे :
जब(i) a = 3 और b = 1
(ii) a = 3 और b = 7 (iii) a = 0 b= 2
(iv) a = 10 और b = 7 (v) a = 15 और b =17
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can you give the question properly in English
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