:1,4,16,49,121,( )。A.256 B.225 C.196 D.169
31 1 , 4 , 16 , 49 , 121 ,()A 256B 225C 196D 169
:-27,-64,-125,( )。A.-144B.-169C.-196D.-216
16,36,64,81,100,( ) A.121 B.144 C.169 D.196
1, 4, 3, 1, 1/8, ( )。A.1/169B.1/144C.-1/125D.-1/121
196,169,144,( ),100。A.120B.121C.123D.124
144,225,9,324,()。A. 441 B. 225 C. 121 D. 676
81,64,121,36,( ),16A.144B.169C.196D.225
1,4,16,49,121,( )。A.256B.225C.196D.169
1,1/2,3/13,1/10,5/121,()。A. 7/144B. 3/182C. 5/169D. 9/196
1,1/2,3/13,1/10,5/121,( )。A.7/144B.3/182C.5/169D.9/196
1,9,25,49,121,( ) A.144 B.154 C.169 D.177
2, 5, 12, 29, 70, ( )。A.100B.121C.144D.169
:225, 196, 169,( ),121A.100 B.144 C.125 D.121
向量α=(2,1,-1),若向量β与α平行,且α·β=3,则β为( )。A.(2,1,-1)B.(3/2,3/4,-3/4)C.(1,1/2,-1/2)D.(1,-1,1/2)
1,1/2,1/2,3/8,5/16,( ) A. 1/4B. 3/12C. 7/32D. 1/3
1,4,16,49,121,( ) A. 256B. 225C. 196D. 169
81,64,121,36,( ),16 A. 144B. 169C. 196D. 225
1 196 27 144 25 100 ( )A.7B.8C.9D.11
216(64/100) ( ) 64(100/144) 27(121/169) 8(144/196)A. 125(85/117)B. 152(86/122)C. 125(81/121)D. 106(79/123)
13, 112, 121, 130, ( )。A. 131 B. 139 C. 132 D. 144
48/121 ( ) 70/169 81/196 92/225 A. 58/144B. 51/126C. 65/131D. 59/144
1, 9, 25, 49, 121,( )。A. 144B. 154C. 169D. 177
1/4,2/7,2/5,8/13,1,( ) A. 9/16B. 3C. 32/19D. 2/81
9,25,49, 81, ( )。 A. 100 B. 121 C. 169 D. 196
A.(3,-1,2)B.(1,-2,3)C.(1,1,-1)D.(1,-1,-1)