Question
Download Solution PDF300க்கும் 1000க்கும் இடையில் எத்தனை எண்கள் 7 ஆல் வகுபடும்?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFகொடுக்கப்பட்ட நிபந்தனை:
300 முதல் 1000 வரையிலான எண்கள் 7 ஆல் வகுபடும்.
கோட்பாடு:
கூட்டுத் தொடர்ச்சி
an = a + (n - 1)d
கணக்கீடு:
7 (300 - 1000) = 301 ஆல் வகுபடும் முதல் எண்
அதேபோல்: 301, 308, 315, 322...........994
மேலே உள்ள தொடர் AP ஐ உருவாக்குகிறது,
எங்கே a = 301, பொதுவான வேறுபாடு/d = 308 - 301 = 7 மற்றும் கடைசி கால (an) = 994
⇒ an = a + (n - 1)d
⇒ 994 = 301 + (n - 1)7
⇒ (994 - 301)/7 = n - 1
⇒ 693/7 + 1 = n
⇒ 99 + 1 = n
⇒ n = 100
∴ 300க்கும் 1000க்கும் இடையில் 100 எண்கள் உள்ளன, அவை 7 ஆல் வகுபடும்.
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