14 / 15 divided by 7 is equal to? ………………………………

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• 1. What is a number whose square equals one in 49
• 2. If the square of a number is 49 out of 36, then the number is_____ .
• 3. On the limit problems of Higher Mathematics If the real number B satisfies | B | 1, LIM (1 + B + B ^ 2... + B ^ (n-1)) / b ^ n =? If sequence {an} 1 / N ^ 2 1 ≤ n ≤ 1000 n ^ 2 / (n ^ 2-2n) n ＞ 1001, then {an} limit value A. 0b, 1C, 0or1d, not present Thank you The second point is that the two cases are divided into braces
• 4. 2 × 4 = 5-1 3 × 5 = 4-1 4 × 6 = 5-1 11 × 13 = 12-1 find the nth formula
• 5. What is 49 and 21 / 18 plus 27 and 21 / 2
• 6. The limit problem of Higher Mathematics Why is LIM (x → 1 -) e1 / X-1 = 0
• 7. 1's Square = 1 / 6 * 2 * 3; 1's square + 2's Square = 2 / 6 * 3 * 5; 1's square + 2's square + 3's Square = 3 / 6 * 4 * 7
• 8. How many days is 21 years
• 9. A problem of higher number about limit lim [1/（1-x）-3/(1-x)³] x→1
• 10. Find the rule: three + four = five, five + twelve = thirteen, the nth formula is Observe a set of formulas Square of 3 + square of 4 = square of 5 Square of 5 + square of 12 = square of 13 Square of 7 + square of 24 = square of 25 Square of 9 + square of 40 = square of 41 What is the nth formula
• 11. How to divide X by five equals 14 out of 15
• 12. 1. (1) Rewrite 7-3.18 = 3.82 into one addition and one subtraction. 2. Rewrite 7 * 21 / 5 = 15 into two division
• 13. How much is 7 / 4 times 21 times 5 / 16
• 14. 5 of 6 × 4.7 + 5.3 △ 6 of 5 12 minus 3 of 4 × 21 of 20 minus 2 of 7, 1 of 2 + 2 × = 6.5
• 15. Calculation: 1 + 2-3-4 + 5 + 6-7-8 + 9 + 10-11-12 + +2005+2006-2007-2008．
• 16. One and half minus 1.6 plus two thirds
• 17. One and a half minus one and a half plus two-thirds
• 18. 16 out of 17 minus 2 out of 19 times 16 out of 17
• 19. 7 / 3 times 5 / 9 minus 4 / 9 times 4 / 3
• 20. How much is twenty-three times seventeen sixteen plus sixteen times seventeen