Search found 2 matches
- Tue Feb 08, 2011 11:44 pm
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2011/8
- Replies: 18
- Views: 21414
Re: Dhaka Higher Secondary 2011/8
Let me show how I advanced..... 1st I divided the numbers into 3 groups using mod i.e 0 mod 3, 1mod 3 and 2 mod 3. According to divisibility rule, numbers made up by 1st 3 digits/3 & numbers made up by 2nd 3 digits/3 & 2 both. so, 6th digit must be even. 2/4/6 or 8. for 2 mod 3 digits for the 2nd gr...
- Tue Feb 08, 2011 11:42 pm
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2011/8
- Replies: 18
- Views: 21414
Re: Dhaka Higher Secondary 2011/8
Let me show how I advanced..... 1st I divided the numbers into 3 groups using mod i.e 0 mod 3, 1mod 3 and 2 mod 3. According to divisibility rule, numbers made up by 1st 3 digits/3 & numbers made up by 2nd 3 digits/3 & 2 both. so, 6th digit must be even. 2/4/6 or 8. for 2 mod 3 digits for the 2nd gr...