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Bakelite is a type of thermosetting plastic, which means it cannot be remolded or heated after its initial heatforming. This contrasts with thermoplastics like Teflon, Polyvinyl chloride (PVC), and Polythene that can be reheated and reshaped.
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
...4 5.5 19 .5 98.5 694 6251.5...
3, 49, 191, 477, ?, 1673
104 136 152 160 164 ?
...21, 37, 62, 98, 147, ?
If 4 10 16 26 x 50
Then find the value of (x² - 1) + ( x² + 1).
...2 3.5 11.5 44 192.5 988
9 a...
