Logical Thinking Exercise with Letters

Not nearly as comprehensive, challenging and enjoyable as the logical thinking exercises on the Compublox CD, but still worth doing.

Add letters to complete the sequences below. You will find the answers at the bottom of the page.

GROUP A
1. a b c d e f g ? ?
2. g h i j k l m n ? ?
3. o p q r s t u ? ?

GROUP B
1. j i h g f e d c ? ?
2. p o n m l k ? ?
3. x w v u t s r ? ?

GROUP C
1. b d f h j l ? ?
2. i k m o q s ? ?
3. l n p r t v ? ?

GROUP D
1. o m k i g e ? ?
2. t r p n l j ? ?
3. y w u s q o ? ?

GROUP E
1. a b d e g h ? ? ?
2. b c e f h i ? ? ?
3. g h j k m n ? ? ? ?

GROUP F
1. o n l k i ? ? ?
2. z y w v t ? ? ?
3. t s q p n ? ? ?

GROUP G
1. m q u y c ? ?
2. d h l p t ? ?
3. b f j n r ? ?

GROUP H
1. a c f j o ? ?
2. c e h l q ? ?
3. f h k o t ? ?

GROUP I
1. a z b y c x d w ? ?
2. e v f u g t h s i ? ?
3. j r k q l p m o n n ? ?

GROUP J
1. a z c x e v g ? ? ? ?
2. k l m j o h q ? ? ? ?
3. u n w l y j a ? ? ? ?

GROUP K
1. c b f e i h l ? ? ?
2. w v z y c b f ? ? ?
3. m l p o s r v ? ? ?

GROUP L
1. c a h f m k r ? ? ?
2. e c j h o m ? ? ? ?
3. g e l j q o ? ? ? ? ?

GROUP M
1. a c f h k n q ? ?
2. f h k m p r u ? ? ?

Answers:

GROUP A
1. h i
2. o p
3. v w

GROUP B
1. b a
2. j i
3. q p

GROUP C
1. n p
2. u w
3. x z

GROUP D
1. c a
2. h f
3. m k

GROUP E
1. j k m
2. k l n
3. p q s t

GROUP F
1. h f e
2. s q p
3. m k j

GROUP G
1. g k
2. x b
3. v z

GROUP H
1. u b
2. w d
3. z g

GROUP I
1. e v
2. r j
3. o m

GROUP J
1. t i r k
2. f s d u
3. h c f e

GROUP K
1. k o n
2. e I h
3. u y x

GROUP L
1. p w v
2. t r y w
3. v t a y f

GROUP M
1. r u
2. w z b
3. a c f

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