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The logic followed here is as follows: All the vowels are replaced by their immediately preceding letter, as per English alphabetical order. The consonants are replaced by their fourth succeeding letter, as per English alphabetical order. A – 1= Z P + 4 = T P + 4 = T L + 4 = P Y + 4 = C Code for APPLY – ZTTPC M + 4 = Q O – 1 = N U – 1 = T S + 4 = W E – 1 = D Code for MOUSE – QNTWD L + 4 = P I – 1 = H G + 4 = K H + 4 = L T + 4 = X S + 4 = W Code for LIGHTS – PHKLXW
62 90 122 158 198 ?
22   39    58    81   ?      141
The number of terms in the sequence 20, 25, 30, ….., 160 is:
9999 6666 ? 2962.66 1975.11 1316. 74
...4Â Â Â Â Â Â Â Â Â 5.5Â Â Â Â Â Â Â Â Â Â Â 19 .5Â Â Â Â Â Â Â Â Â Â Â Â Â 98.5Â Â Â Â Â Â Â Â Â Â Â Â Â Â 694Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 6251.5...
3, 49, 191, 477, ?, 1673
104Â Â Â Â Â 136Â Â Â Â Â 152Â Â Â Â 160Â Â Â Â Â 164Â Â Â Â Â ?
...21, 37, 62, 98, 147, ?
If 4 10 16 26 x 50
Then find the value of (x² - 1) + ( x² + 1).
...2Â Â Â Â Â Â Â Â Â Â Â Â Â Â 3.5Â Â Â Â Â Â Â Â Â Â 11.5Â Â Â Â Â Â Â Â 44Â Â Â Â Â Â Â Â Â Â Â 192.5Â Â Â Â Â 988
9Â Â Â Â Â Â Â Â Â a...