本课配套习题挑战模式1/5
单选题
难度系数:
1.一组有规律的数字依次是1,5,11,19,29,A,55,其中A的值是( )
A: 40 |
B: 41 |
C: 42 |
D: 43 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOiAg+iZkeebuOmCu+S4pOaVsOW3ruWAvOeahOinhOW+iw==
- 答案:Qg==
6Kej77ya5LiA57uE5pWw5L6d5qyh5pivMe+8jDXvvIwxMe+8jDE577yMMjnvvIxB77yMNTXvvIw8YnI+5Y+v5Lul5Y+R546w77yaNS0xPTTvvIwxMS01PTbvvIwxOS0xMT0477yMMjktMTk9MTDvvIw8YnI+5omA5LulQS0yOT0xMu+8jDU1LUE9MTQuIDxicj7miYDku6VBPTQx77yM5Lmf56ym5ZCINTUtQT0xNC4g
本课配套习题挑战模式2/5
单选题
难度系数:
2.观察数字-1,2,7,14,23,34,…的规律,照此规律第n个数为( )
A: n2 |
B: n2-1 |
C: n2-2 |
D: n2+1 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOiAg+iZkeebuOmCu+S4pOaVsOeahOW3ruWAvO+8jOS4ujMsNSw3LDksMTHigKY=
- 提示2:IOW3ruWAvOaIkOetieW3ruaVsOWIl++8jOS4lOWFrOW3ruS4ujI=
- 提示3:IOesrG7pobnkuI5uPHN1cD4yPC9zdXA+5pyJ5YWz
- 答案:Qw==
6Kej77ya55u46YK75Lik5pWw5beu5YC85Li6Myw1LDcsOSwxMeKApjxicj7lt67lgLzmiJDnrYnlt67mlbDliJfvvIzkuJTlhazlt67kuLoyPGJyPuesrG7pobnkuI5uPHN1cD4yPC9zdXA+5pyJ5YWz77yMbj0x5pe277yMbjxzdXA+Mjwvc3VwPj0xLDxicj7ljp/mlbDliJfnrKxu6aG55Li6bjxzdXA+Mjwvc3VwPi0y
本课配套习题挑战模式3/5
单选题
难度系数:
3.4,7,12,19,28,… 第15项为()
A: 226 |
B: 227 |
C: 228 |
D: 229 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOinguWvn+ebuOmCu+S4pOaVsOeahOW3ruWAvOeahOinhOW+izMsNSw3LDnvvIzigKY=
- 提示2:IOW3ruWAvOaIkOetieW3ruaVsOWIl+WFrOW3ruS4ujLvvIzmiYDku6XnrKxu6aG55LiObjxzdXA+Mjwvc3VwPuacieWFsw==
- 提示3:IOW9k249MeaXtu+8jOavlOi+g+aVsOWIl+esrOS4gOS4quaVsOW+l+esrG7pobnkuLpuPHN1cD4yPC9zdXA+KzM=
- 答案:Qw==
6Kej77ya55u46YK75Lik5pWw55qE5beu5YC855qE6KeE5b6LMyw1LDcsOe+8jOKApjxicj7lt67lgLzmiJDnrYnlt67mlbDliJflhazlt67kuLoy77yM5omA5Lul56ysbumhueS4jm48c3VwPjI8L3N1cD7mnInlhbM8YnI+5b2Tbj0x5pe277yM5q+U6L6D5pWw5YiX56ys5LiA5Liq5pWw5b6X56ysbumhueS4um48c3VwPjI8L3N1cD4rMzxicj4g5b2Tbj0xNeaXtu+8jG48c3VwPjI8L3N1cD4rMz0yMjg=
本课配套习题挑战模式4/5
单选题
难度系数:
4.4,13,28,49,76,… 第𝑛项________
A: 3n2-1 |
B: 3n2+1 |
C: 3n2-2 |
D: 3n2+2 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOinguWvn+ebuOmCu+S4pOaVsOeahOW3ruWAvOeahOinhOW+izksMTUsMjEsMjfvvIzigKY=
- 提示2:IOW3ruWAvOaIkOetieW3ruaVsOWIl+WFrOW3ruS4ujbvvIzmiYDku6XnrKxu6aG55LiOM248c3VwPjI8L3N1cD7mnInlhbM=
- 提示3:IOW9k249MeaXtu+8jOavlOi+g+aVsOWIl+esrOS4gOS4quaVsA==
- 答案:Qg==
6Kej77ya55u46YK75Lik5pWw55qE5beu5YC855qE6KeE5b6LOSwxNSwyMSwyN++8jOKApjxicj7lt67lgLzmiJDnrYnlt67mlbDliJflhazlt67kuLo277yM5omA5Lul56ysbumhueS4jjNuPHN1cD4yPC9zdXA+5pyJ5YWzPGJyPm49MeaXtjNuPHN1cD4yPC9zdXA+PTPvvIzogIzmlbDliJfnrKzkuIDkuKrmlbDkuLo0PGJyPuaVheesrG7pobnkuLozbjxzdXA+Mjwvc3VwPisx
本课配套习题挑战模式5/5
单选题
难度系数:
5.一组有规律的数字依次是1,5,11,19,29,41,55,…则第n项为( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOinguWvn+ebuOmCu+S4pOaVsOeahOW3ruWAvOeahOinhOW+izQsNiw4LDEwLDEyLDE077yM4oCm
- 提示2:IOiuvjxpbWcgd2lkdGg9MzIzIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNCLzMwL3JCQUNFMU5yTm1HU2RjT3BBQUFFaEF4MjJ6MDMxMC5wbmciPg==
- 提示3:IOWPoOWKoOazleehruWumuesrG7pobnnmoTlgLw=
- 答案:RA==
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