Can you solve the dark coin riddle? - Lisa Winer

erichi (26)in #education • 6 years ago

#ted #video #speech #knowledge

6 years ago in #education by erichi (26)

$0.00

STEEM 0.19

TRX 0.18

JST 0.035

BTC 91087.60

ETH 3181.87

USDT 1.00

SBD 2.78